Showing papers by "Aligarh Muslim University published in 1979"
TL;DR: In this article, the effect of temperature on the CMC of sodium dodecyl sulfate and cetyltrimethylammonium bromide has been studied in n-alkanol-water mixtures at different temperatures.
43 citations
TL;DR: In this paper, the seed oil of H. sabdariffa (Malvaceae) contains myristic (2.1%), palmitic (35.2%), stearic (3.4%), oleic (34.0%), linoleic (14.6%), and malvalic, 1.3%.
Abstract: Due to controversial reports on the component acids of Hibiscus sabdariffa seed fat and in anticipation of the co-occurrence of cyclopropene and epoxy acids in the seed oils of Malvaceae (especially in the genus Hibiscus)5,6 it was considered worthwhile to re-examine the seed oil of H. sabdariffa. Seed oil of H. sabdariffa (Malvaceae) contains myristic (2.1%), palmitic (35.2%), palmitoleic (2.0%), stearic (3.4%), oleic (34.0%), linoleic (14.6%) and three unusual HBr-reacting fatty acids. These acids are cis-12,13-epoxy-cis-9-octadecenoic (12,13-epoxyoleic), 4.5 %; sterculic, 2.9%; and malvalic, 1.3%. Acetolysis of epoxide in the presence of cyclopropenes was effected by room temperature treatment with acetic acid-10% sulphuric acid. Seed oils of Vernonia anthelmintica and Sterculia foetida were used as reference standards.
31 citations
TL;DR: The paper deals with 34 encyrtid species belonging to 14 genera, two generic and six specific names are placed in synonymy, one new name and nine new combinations are proposed.
Abstract: Summary The paper deals with 34 encyrtid species belonging to 14 genera. Two generic and six specific names are placed in synonymy, one new name and nine new combinations are proposed. The proposed changes are as follows: Aenasius Walker (= Pseudanasius Hayat et al.; syn. nov.) A. advena Compere (= Pseudanasius clavus Hayat et al.; syn. nov.) Callipteroma testacea Motschulsky (= Leptomastidea sayadriae Mani and Kaul; syn. nov.) Diaphorencyrtus (gen. nov.) aligarhensis (Shafee et al.) comb. nov. from Aphidencyrtus. Erencyrtus dewitzi Mahdihassan (= Parageniaspis indicus Alam; syn. nov.) Homalotylus albiclavatus (Agarwal) (= Neoaenasioidea albiscutellaris Khan; syn. nov.) Parechthrodryinus albiclavatus (Shafee et al.) comb. nov. from Protyndarichus. P. clavicornis (Cameron) (= Protyndarichus submetallicus Alam; syn. nov.) P. hemiaspidoproctis (Subba Rao) comb. nov. from Tyndarichus. P. nigriclavatus (Shafee et al.) comb. nov. from Protyndarichus. Prochiloneurus Silvestri (= Prochiloneuroides Hayat et al. sy...
28 citations
TL;DR: In this article, a generalized expression for the spherical flow field generated by plastic flow of metal through a converging die of regular polygonal cross-section is suggested, which is valid for all the possible boundary shapes of the zone of plastic deformation.
27 citations
TL;DR: In this paper, the synthesis of the arsenophosphates of various metals has been investigated and the chemical composition, ion exchange capacity, thermal stability, concentration curves, elution curves, pH-titrations and IR studies have been performed on two materials.
25 citations
TL;DR: An enzyme that rapidly catalyzes the hydrolysis of denatured DNA has been partially purified from germinated pea seeds and shows activity over a broad range of pH but was most active between pH 6.5 and 8.0.
24 citations
TL;DR: In this article, Nagasawa et al. reported the electrical potentials of nickel, manganese chromate and cupric iodide membranes using various 1:1 electrolytes.
20 citations
TL;DR: In this article, a distorted square planar structure involving chlorine bridges has been proposed for the copper complex and an octahedral geometry with ligand bridges for all complexes is tentatively proposed and it appears that all are polymers.
Abstract: Potassium dihydro-bis-(1-indazolyl)borate, synthesized from potassium borohydride and indazole, has been used as a reagent to yield complexes with copper(II), nickel(II), cobalt(II), manganese(II) and iron(III) ions. From i.r. spectral studies the ligand is uninegative and bidentate and coordination occurs through the nitrogen atom at position 2 of the indazole ring system in all cases. With the sole exception of the copper(II) complex, the nitrogen atom at position 1 is also involved in forming a bridge with an adjacent metal ion. On the basis of electronic spectral studies and magnetic susceptibility measurements a distorted square planar structure involving chlorine bridges has been proposed for the copper complex. An octahedral geometry with ligand bridges for all complexes is tentatively proposed and it appears that all are polymers.
19 citations
01 Apr 1979
TL;DR: In laboratory enclosures, male Indian gerbilsTatera indica indicA (Hardwicke), board a cereal, or wheat, for as long as the weight lost on previous diet of vegetables is not recovered.
Abstract: In laboratory enclosures, male Indian gerbilsTatera indica indica (Hardwicke), board a cereal, or wheat, for as long as the weight lost on previous diet of vegetables is not recovered. The female gerbils exhibit no such response.
19 citations
TL;DR: In this paper, the rats were poisoned with zinc phosphide in one of the two flours and again presented with the same choice of unpoisoned foods in the same order as before.
17 citations
TL;DR: The seed oil of Eriolaena hookeriana (Sterculiaceae) contains malvalic (25.8%) and sterculic (6.0%) acids in addition to normal fatty acids as discussed by the authors.
TL;DR: A close inter-relationship between the two species is recognized and hybrid vigour for height of plant and number of branches, flowers and fruits as well as for resistance against drought and fruit and shoot borers is demonstrated.
Abstract: This paper presents a morphological and cytogenetic account of Solanum incanum, S. melongena variety ‘Giant of Banaras’ and their F1 hybrid. A close inter-relationship between the two species is recognized and hybrid vigour for height of plant and number of branches, flowers and fruits as well as for resistance against drought and fruit and shoot borers is demonstrated.
TL;DR: In this article, a general method involving a one step synthesis of β-amino acid, in good yield, through catalytic reduction of oximes of α-β-unsaturated acid is reported.
TL;DR: In this paper, a method for the computerised evaluation of the magnetizing inrush current in transformers without any drastic linearizing assumption for the B-H curve is proposed.
TL;DR: Biionic and multiionic potentials arising across parchment supported nickel and cobalt phosphate membranes using various combinations of 1:1 electrolytes at different concentrations have been measured and perfect Donnan exclusion of coions was realized in the dilute limit of the external solution.
TL;DR: It was concluded that photoinactivation of this enzyme was mainly due to conformational changes caused by the damage of constitutional aromatic amino acid residues but also partially due to inactivation of copper of enzyme with hydrated electron.
Abstract: It has been reported previously that the UV irradiation of mushroom tyrosinase resulted in a logarithmic loss of biological activity due to the conformational changes in the enzyme molecule. The purpose of the present study was to investigate the factors influencing the radiosensitivity of enzymatic activity. A similar rate of the catalytic activity loss at different pH supported the attribution to the conformational change -of the enzyme molecule but not to the active site damage. The presence of potassium chloride and the absence of oxygen resulted in only a little protection against enzyme photo inactivation. Activity survival curve as a function of radiation dose at a higher enzyme concentration showed to have a shoulder which indicate the mutual protection of the enzyme molecules. Copper (II) protected the loss in catalytic activity of enzyme on irradiation. This was explained in terms of scavenging of the hydrated electron by copper (II). Therefore, it was concluded that photoinactivation of this enzyme was mainly due to conformational changes caused by the damage of constitutional aromatic amino acid residues but also partially due to inactivation of copper of enzyme with hydrated electron.
TL;DR: The adaptability of carp myosin is demonstrated through a loose molecular conformation, which has probably been achieved by the addition of weak interactions in the course of evolution.
Abstract: During thermal inactivation, the addition of as low as M urea resulted in the reduction of delta G identical to barrier of the inactivation of carp myosin Ca2+-ATPase, whereas that of rabbit myosin remained unaffected. In the absence of urea, a four-hour incubation of carp myosin was accompanied by the release of light chains at 30 degrees C, a value 10 degrees C lower than that for rabbit myosin. Electron micrographs revealed that carp myosin forms artificial thick filaments, which were uniform in size and may differ in a few details from those of rabbit. Not only that helical content of carp myosin was about 4% less than those of rabbit myosin, but it showed more sensitivity to thermal and urea denaturation; and its reversibility upon subsequent cooling or removal of urea was rather poor. The loss in helicity of myosins by urea was a concentration- and temperature-dependent biphasic reaction, with the most obvious effect observed on carp myosin. That carp myosin has increased tendency of unfolding in urea solutions was confirmed by viscosity data and the exposure of thiols also. Even in the absence of urea more SH groups of carp myosin were incorporated by DTNB, and more epsilon-amino groups reacted with NQS. Carp myosin remained in solution till the modification of about 52 surface myosin remained in solution till the modification of about 52 surface amino groups, whereas no precipitation effect was noted in case of rabbit myosin. Neither amino-acid composition nor some parameters derived from it, such as average hydrophobicity polarity index and number of polar side chains, revealed any difference pertinent to the relative stability of the two myosins. On the contrary, the contractile efficiency of carp myosin in the near physiological range was high and thus inversely related with the thermostability. This relationship along with the above evidence has been regarded to demonstrate the adaptability of carp myosin through a loose molecular conformation, which has probably been achieved by the addition of weak interactions in the course of evolution.
TL;DR: The growth rate of the fish was found high during the 1st and 2nd years and decreased gradually afterwards till the 7th year and both sexes showed more a or less similar growth rate and attained a similar longevity.
Abstract: Age and growth of Labeo bata (Ham.) was studied by the analysis of annuli found on the scale and by length-frequency distribution. The fish attained lengths of 131, 194, 236, 277, 314, 341 and 364 mm at the end of the 1st, 2nd, 3rd, 4th, 5th, 6th and 7th years of life respectively. The increase in length of scale bears a constant relationship with the increase in length of fish, and regression analysis yielded a straight line between scale and body length. Calculated values could be expressed as: Y = −2.534 + 0.064 X
TL;DR: In this article, the laser Raman and i.r. spectra of the liquid 1-fluoro 2:4-dinitrobenzene have been investigated and the Depolarization Ratio of the Raman lines have been calculated.
TL;DR: The fixed oil derived from the berries of Myrtus communis L. (family Myrtaceae) contain the following acids: lauric 1.4, myristic 1, palmitic 23.1, stearic 2, oleic 14.8, and linolenic 8.9%.
Abstract: The fixed oil derived from the berries of Myrtus communis L. (family Myrtaceae) contain the following acids: lauric 1.4%, myristic 1.1%, palmitic 23.9%, stearic 2.8%, oleic 14.3%, linoleic 47.6%, and linolenic 8.9%.
Chromatographische Analyse des Oles aus Myrtus communis Das Ol aus den Beeren von Myrtus communis L. (Stamm Myrtaceae) enthalt 1.4% Laurinsaure, 1.1 % Myristinsaure, 23.9% Palmitinsaure, 2.8% Stearinsaure, 14.3% Olsaure, 47.6% Linolsaure und 8.9% Linolensaure.
TL;DR: In this paper, the composition of the complex formed by the interaction of hexaaquochromium(III) with acetate ions was determined by Job's method of continuous variations and by conductivity measurements.
TL;DR: A new selective and sensitive method for the detection of aliphatic amines has been developed with chloride-form anion-exchange resins and 2,4-dinitrotoluene and the reaction with tertiary amines can be explained in terms of hitherto postulated zwitterionic intermediates.
TL;DR: In this paper, a polymeric structure is proposed for the 1:1 complexes of 4-aminoantipyrine involving ligand bridging through the carbonyl oxygen and the amino nitrogen.
Abstract: The preparation and characterization of Ge(IV), Sn(IV), Ti(IV) and Zr(IV) halide complexes of antipyrine and 4-amino-antipyrine have been described. The low frequency IR spectra indicate a trans-octahedral geometry involving unidentate or bidentate ligands, however, a cis-octahedral structure is proposed for the GeCl4 complex of 4-aminoantipyrine. A polymeric structure is proposed for the 1:1 complexes of 4-aminoantipyrine involving ligand bridging through the carbonyl oxygen and the amino nitrogen.
TL;DR: A test for detection and differentiation of acidic, basic and neutral amino-acids is based on use of a sulphonic acid cation-exchange resin in Na(+)-form in the presence of various oxidants and final detection with Nessler's reagent.
TL;DR: In this paper, distribution studies of some metal ions have been made on Sn(IV) and Cr(III) arsenophosphates and on some samples of Sn(II) amine hexacyanoferrates(II), using radiotracers.
Abstract: Distribution studies of some metal ions have been made on Sn(IV) and Cr(III) arsenophosphates and on some samples of Sn(II) amine hexacyanoferrates(II), using radiotracers. The Kd values of Cs+ and Rb+ have been followed at varying HNO3 concentrations also. As a result 3 useful binary separations have been achieved on Sn(IV) and Cr(III) arsenophosphates, such as Sr2+−Cs+, Hg2+−Ag+ and Hg2+−Zn2+.
TL;DR: The paper deals with four species of Azotus Howard and the two species of Coccophagoides Girault known from India and a tentative key to the Indian species of this genus is given.
Abstract: Summary The paper deals with four species of Azotus Howard and the two species of Coccophagoides Girault known from India. A. qadrii Agarwal, A. delhiensis Lal and A. chionaspidis Howard are distinguished and a tentative key to the Indian species of this genus is given. A. indicus Khan and Shafee is considered a synonym of delhiensis. A biological basis is suggested for distinguishing between C. orientalis (Agarwal) and C. utilis Doutt, since these are found to be morphologically identical in the female sex (males unknown in orientalis). The genera Mesidia Foerster and Prococcophagus Silv. are recorded for the first time from India; the former based on a specimen identified as M. pumila Mayr.
TL;DR: In this paper, the general formula M(L)3Cl3 and M(5-AInz)2Cl3 · n H2O (where M = RuIII, RhIII and IrIII; L = indazole and 5-nitroindazole; n=1-2) have been synthesized and characterised by elemental analysis, molar conductance, magnetic susceptibility and i.r.
Abstract: New complexes of the general formula M(L)3Cl3 and M(5-AInz)2Cl3 · n H2O (where M = RuIII, RhIII and IrIII; L = indazole and 5-nitroindazole; n=1–2) have been synthesized and characterised by elemental analysis, molar conductance, magnetic susceptibility and i.r. and electronic spectral measurements. All the complexes are covalent and apparently have an octahedral geometry. The ligands are monocoordinated through the pyrrole nitrogen. From the far i.r. spectra amer configuration has been assigned to the indazole and 5-nitroindazole complexes.
TL;DR: In this article, the reaction of phenyl(tribromomethyl)mercury with sulfoximines gives the corresponding oxosulfonium ylide as the major product along with the respective sulfoxide and tetrahaloethylene as minor products.
TL;DR: In this paper, a co-product occurring during the synthesis of long chain α,β-unsaturated acid by dehydrohalogenation of α-halogenated acid by alcoholic alkali, previously unidentified, has been characterized as 2-ethoxy-alkanoic acid.
Abstract: A co-product occurring during synthesis of long chain α,β-unsaturated acid by dehydrohalogenation of α-halogenated acid by alcoholic alkali, previously unidentified, has been characterized as 2-ethoxy-alkanoic acid. Its structure has been established by combustion data as well as by spectral methods.